### hydrodynamic equations

(equations describing the dynamics of fluids)

**Hydrodynamic equations** are equations that describe fluid dynamics,
relating velocity, mass, momentum, and pressure.
The Navier-Stokes equations provide a very general framework,
which may be made more specific by plugging in the characteristics
of the forces, e.g., gravity, and the fluids, e.g.,
an astronomical body atmosphere or surface liquid.
For (approximately) spherically-symmetric flows, e.g., the
solar wind, it can be the equation of hydrostatic equilibrium
with modifications to handle the motion.

(*fluid dynamics,hydrodynamics*)
**Further reading:**

http://en.wikipedia.org/wiki/Fluid_dynamics

http://glossary.ametsoc.org/wiki/Hydrodynamic_equations_of_motion

http://www.ita.uni-heidelberg.de/~dullemond/lectures/num_fluid_2012/Chapter_1_improved.pdf

https://math.mit.edu/~dunkel/Teach/18.354_2014S/lecture_notes/L06_L07_hydrodynamics.pdf

**Referenced by pages:**

Madelung equations

Index